The fact is that government cannot protect us from every harm that exists.
The fact is that drug companies can do reasonable research, testing, and evaluation before releasing a new product, and the government regulatory agency will make an honest effort to determine its probable effectiveness as well as risks involved. And both are going to miss something now and then.
If government must make sure there is zero risk with any product before we are allowed to use it, none of us would be allowed to use anything. If drug companies must identify every possible downside of a new product before they release it, we would still be suffering from many hundreds of physical maladies that we can now avoid or cure or get relief through the products developed by pharmaceutical companies.
EVERY food substance is a risk to somebody.
EVERY medicine contains a little poison.
Every one of us is at risk of something just by getting out of bed in the morning. None of us know that we won't be killed by lightning or falling aircraft or a stray meteorite or some substance that accidentally got into our food on any given day. The best that good government can do, that drug companies can do, that we can do is to exercise reasonable caution. Beyond that we all just do the best we can do avoid unnecessary risk and live our lives.
The Founders were hopeful that their succeeding generations would be educated enough to understand that, and be entrusted to make decisions regarding their own lives and liberty without government intrusion.
We have too many generations of outright babies that wince at the first sign of failure...or their first defeat at attempting life.
One of the most stupid regulations that significantly raises the cost of the medicines we have is the looooooooooong litany of known side effects of any given drug when it is advertised in a magazine or on TV. More than 50% of the advertising seconds purchased is taken up by them having to recite every bad thing that could happen if you take that drug. And even as they desensitize us to the real risks of any given drug, if they happen to miss something that turns up later, then they can be sued for the omission.
It should suffice to say "As is the case with all medications, all people cannot take this product safely and known and unknown side effects can affect some people. Be sure to read all product information carefully and follow the advice of your physician."